Farkhod Dadajanov 🍉

🚀 What Makes a Service a Microservice in .NET Core? 🔹 Single Business Capability Each service is responsible for one clear business function (Orders, Payments, Users – not everything together) 🔹 Independent Deployment Services can be built, deployed, and released independently (No full-system redeploys for small changes) 🔹 Owns Its Database Each microservice controls its own data (No shared databases, no tight coupling) 🔹 API / Event-Based Communication Services interact via HTTP APIs or messaging (Never through direct database access) 🔹 Independent Scaling Each service scales based on its own traffic and load (High load on Orders shouldn’t affect Payments) 🔹 Separate Security Boundary Every service validates authentication & authorization (Don’t blindly trust internal calls) 🔹 Loose Coupling, High Autonomy Services evolve without breaking others (Faster changes, safer releases) 🎯 Rule of Thumb If a service can be deployed, scaled, and failed independently, it’s a microservice — not a distributed monolith. #DotNet #Microservices #ASPNetCore #SoftwareArchitecture #SystemDesign #BackendEngineering

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🇦🇿 Yeni elmi məqaləmin çap edildiyini məmnuniyyətlə bölüşürəm. Məqaləm Informatics and Control Problems jurnalının 45(2) sayında dərc olunub: “Statistical evaluation of the impact of microlearning and adaptive teaching algorithms on student performance.” Bu tədqiqatda mikroöyrənmə, virtual laboratoriyalar və adaptiv tədris alqoritmlərinin birgə tətbiqinin tələbələrin motivasiyasına və akademik göstəricilərinə təsiri statistik üsullarla araşdırılıb. Nəticələr göstərir ki, mikroöyrənmə əsaslı adaptiv model distant və açıq təhsil mühitlərində öyrənmə nəticələrini əhəmiyyətli dərəcədə yaxşılaşdırır. Oxuyub fikirlərinizi bölüşsəniz və tövsiyə (recommend) edərək dəstək versəniz çox sevinərəm 🙏 🇬🇧 I’m happy to share that my research article has been published in Informatics and Control Problems, Vol. 45(2): “Statistical evaluation of the impact of microlearning and adaptive teaching algorithms on student performance.” The study provides statistical evidence that integrating microlearning, virtual laboratories, and adaptive teaching algorithms significantly improves student motivation and academic performance in open and distance learning environments. The findings highlight the strong potential of adaptive microlearning models in modern education. I’d truly appreciate it if you take a moment to read the paper, share your thoughts, and recommend it for broader visibility 🙌 🔗 Link: https://lnkd.in/gRn3i-XB

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# .NET Developers: Could you please review my second C# solution objectively? I received the following question during a technical interview: > A customer's name is stored across three columns: `FirstName`, `MiddleName`, and `LastName`. Since there is no unique Customer ID, combine these fields to identify and group each customer. For every unique name combination, calculate the total number of orders and the total amount spent. The expected output also contained a formatted status listing the customer's order dates. I understand LINQ `GroupBy` and have used it in my existing projects. However, because this was a handwritten interview, I was not completely confident that I could recall the exact syntax correctly. Therefore, I used the explicit-loop approach that I was more confident about implementing and explaining. ```csharp var allOrders = new List<FoodOrder>(); var orders = _db.FoodOrders     .OrderBy(x => x.FirstName)     .ThenBy(x => x.MiddleName)     .ThenBy(x => x.LastName)     .ToList(); int iteration = 0; int rowCount = orders.Count; string fullName = ""; string currentName = ""; int count = 0; decimal totalAmount = 0; string orderDates = ""; foreach (var item in orders) {     iteration++;     currentName = item.FirstName + " " +                   item.MiddleName + " " +                   item.LastName;     if (fullName == "")     {         fullName = currentName;         count = 1;         totalAmount = item.Amount;         orderDates = item.OrderDate             .ToString("dd-MMM-yyyy") + ", ";     }     else if (fullName == currentName)     {         count++;         totalAmount += item.Amount;         orderDates += item.OrderDate             .ToString("dd-MMM-yyyy") + ", ";     }     else     {         allOrders.Add(new FoodOrder         {             FullName = fullName,             TotalCount = count,             TotalAmount = totalAmount,             Status = $"({count} Orders. " +                      $"Orders On ({orderDates.Trim()}))"         });         fullName = currentName;         count = 1;         totalAmount = item.Amount;         orderDates = item.OrderDate             .ToString("dd-MMM-yyyy") + ", ";     }     if (iteration == rowCount)     {         allOrders.Add(new FoodOrder         {             FullName = fullName,             TotalCount = count,             TotalAmount = totalAmount,             Status = $"({count} Orders. " +                      $"Orders On ({orderDates.Trim()}))"         });     } } return Ok(allOrders); ``` I recognise that LINQ `GroupBy` would be more concise and would normally be my preferred approach while working in an IDE. I would genuinely appreciate feedback from C#/.NET developers: **Is this explicit-loop solution logically acceptable for the stated requirement, and are there any important edge cases or improvements I should consider?** I am looking for honest and constructive technical feedback to improve my approach in future technical interviews.